Rk international offers slate stone. This natural slate stone or simply slate is compact metamorphic rock, composed primarily of silica and alumina. Natural slate stone is easy to clean, requires very little maintenance and also provides high slip resistance & is long lasting. Natural slate stone and slate slabs are suitable for exterior and interior applications flooring, hearths, fireplaces, kitchen, landscaping, driveways, pools, etc. Natural slate stone is known by many names such as grey slates, flags, flagstones, thick stones, slats, flat stones, stone tiles and tile stones, as it imparts a majestic and spectacular look on the buildings. Natural slate is available in a variety of colors such as black slate, blue slate, red slate, grey slate, green slate, etc. This has a non-slip surface can be rubbed plain or finished with clear varnish after fixing.